9. A story is going to be told by the teacher.

10. The cake is being cut with a sharp knife by Mary.

11. The women with a red hat were looked at by the children.

12. The victims with food and clothing have been provided.

13. The lesson is explained by the teacher.

14. The food is being cooked in the kitchen by Mrs. Green.

15. The patients were examined by the doctor.

16. That noise was made by these boys.

17. English is spoken all over the world.

18. He was given back the money last Sunday.

19. These exercises can't be done quickly.

20. The report had been finished by noon.

9. The teacher is going to tell a story. 

-> A story is going to be told by the teacher.

10. Mary is cutting the cake with a sharp knife.

-> The cake is being cutten by Mary with a sharp knife.

11. The children looked at the women with a red hat.

-> The women with a red hat was looked by the children.

12. They have provided the victims with food and clothing.

-> The victims have been provided with food and clothing.

13. The teacher explains the lesson.

-> The lesson is explained by the teacher.

14. Mrs Green is cooking the food in the kitchen.

-> The food is being cooked in the kitchen by Mrs Green.

15. The doctor examined the patients.

-> The patients was examined by the doctor.

16. These boys made that noise.

-> That noise was made by these boys.

17. People speak English all over the world.

-> English is spoken all over the world.

18. He gave him back the money last Sunday.

-> The money was given back to him last Sunday.

19. I can't do these exercises quickly.

-> These exercises can't be done quickly.

20. She had finished the report by noon.

=> The report had been finished by noon.

$@mocmoc756$